Envy is to wish a blessing to be removed of the envied person.
The envy is true as the Prophet (saws) said. Some people own a materialistic weapon such as gun or sword which they can use against whom they want, however, what makes them refrain from using it oppressively is their belief in the method of Allah (swt). As such is the envier who has his weapon of jealousy which he can use. The question is: Does the envier has a free will to practice the envy or is it something out of his control? The answer lies in the divine method’ hence we say to those who are jealous of the people who enjoy blessings: This jealous is your free choice and it is not out of your control. Thus, we notice that the envier is not a real believer because if he had understood that all favours are from Allah (swt) he would not have envied or grudged.
Hence, the envier is ungrateful person, always objected to the Granter, his salvation from the envy is by returning to the mothod of Allah (swt). Allah (swt) commanded us all that when we see a blessing on us or on others to say: “In the name of Allah, What Allah willed has occurred, there is no power except in Allah’. When these words are said at any blessing, then no harm and no envier or envied will be.
If one may ask about the wisdom: Why Allah (swt) gives some people this weapon with which they harm the others with and makes them oppressor?
We answer: This is a test and a trial. Allah (swt) has made some of people as trial for others and as Allah (swt) taught us how to seek refuge from these matters, then it must have some evil and damage in it. Surely, these matters are hidden and precise, that is why Allah (swt) taught us to seek protection from them by Him (swt).